BD46291G-TR

Overview

The BD46291G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed threshold voltage of 2.9 V with an accuracy of ±1%. The device operates within a supply voltage range up to 10 V and provides a manual reset function with a reset delay time of 50 ms. It utilizes a CMOS output type and lacks a watchdog timer or battery backup switch. The component is housed in an SSOP-5 package suitable for surface mount installation.

Feature Summary

• CMOS voltage detection with manual reset capability
• High precision threshold monitoring at 2.9 V
• Low static current consumption design
• Compact SSOP-5 surface mount packaging

Applications

• Microprocessor system reset circuits
• Battery-powered device voltage supervision
• Embedded system power management
• Industrial control unit monitoring

Procurement Notes

Verify the obsolete status and end-of-life designation before procurement planning. Confirm availability through authorized distributors as standard stock may be limited. Ensure compatibility with existing SSOP-5 footprints and validate that the 2.9 V threshold meets specific circuit requirements. Check RoHS compliance documentation for regulatory adherence.

Selection Notes

Select this component for applications requiring precise low-voltage detection with manual reset functionality. Consider the 50 ms delay and 1% accuracy for timing-sensitive systems. Evaluate the -40°C to +105°C operating temperature range against environmental conditions. Compare against adjustable delay alternatives if timing flexibility is required.

Part Context

Part of the BD46 series from ROHM Semiconductor, focusing on supervisory circuits. This model specifically addresses low-voltage detection needs with fixed thresholds. It complements other voltage detectors in the portfolio offering various threshold options and package configurations for diverse electronic design requirements.

Replacement Considerations

BD46295G-TR: Similar voltage detector with 3.0 V threshold. BD46332G-TR: Voltage detector with 3.4 V threshold. BD46362G-TR: Voltage detector with 3.7 V threshold. Verify threshold voltage compatibility when substituting.